As an alternative to storing transaction information locally, Adapter for SAP provides a Centralized Transaction Store (CTS) that enables you to run several adapters for SAP in parallel to improve reliability. The CTS manages the transaction states for multiple adapters for SAP, and can be used with either Integration Server cluster or with a group of adapters for SAP on independent Integration Servers. By providing a central location in which to store transaction information, a CTS ensures that the status of incoming tRFCs will remain valid and consistent throughout the cluster or adapter group. For more information about using the transaction stores, see Considerations about Adapter for SAP Centralized Transaction Store or Shared Transaction Store.

Adapter for SAP group refers to a number of adapters for SAP that belong logically together, that share a single CTS and, by sharing the CTS, allow reliable tRFC/IDoc load balancing. There can be only one CTS per adapter group. All adapters for SAP that are configured to share a specific CTS are considered to be in the same group.

To use the Centralized Transaction Store, configure one of the adapters for SAP as the Centralized Transaction Store Server and configure the rest of the adapters for SAP in the group as Centralized Transaction Store Clients. You configure the Remote Server with an alias of "SAPGroupStore" for each Adapter for SAP of your adapter group (and in exactly the same way). For configuration instructions, see Configuring a Centralized Transaction Store (Server).

When a transaction is processed either by the Centralized Transaction Store Server or by any of the Centralized Transaction Store Clients, the adapter stores the transaction status in the server, which can accessed by the adapter server and all the adapter clients. Note that the way in which the transactions are processed is the same as if they were stored locally, but the status of the processed transactions is stored in the Centralized Transaction Store Server instead of storing the status locally on each adapter in the group.

Use the Transactions screens to view and manage the transactions that Adapter for SAP records in the CTS. For more information, see:

For additional performance and configuration tasks, see: